Compression ignition type two-stroke aviation piston engine and air passage thereof

Abstract

The invention discloses a compression ignition type two-stroke aviation piston engine and an air passage thereof. The compression ignition type two-stroke aviation piston engine comprises at least one set of air inlet and exhaust pipes, wherein each set of air inlet and exhaust pipes comprises a first air inlet branch pipe, a second air inlet branch pipe and an exhaust branch pipe which are used for being connected with a cylinder sleeve of an engine cylinder block respectively; a first air inlet outlet of each first air inlet branch pipe is at least partially aligned with an exhaust inlet of each exhaust branch pipe; and a second air inlet outlet of each second air inlet branch pipe is formed in the side portion of a connecting line between each first air inlet outlet and each exhaust inlet. The first air inlet branch pipes and the second air inlet branch pipes are used for jointly supplying fresh air to the cylinder block, so that the inflation efficiency is improved; the second air inlet outlets are formed in the side portions of the connecting lines between the first air inlet outlets and the exhaust inlets, namely, transverse air inlet is increased, the scavenging effect is improved, the movement intensity of airflow in the cylinder block is increased; and the first air inlet outlets of the first air inlet branch pipes are at least partially aligned with the exhaust inlets of the exhaust branch pipes, so that the movement intensity of the airflow in the cylinder block is further improved.

Description

technical field [0001] The invention relates to the technical field of engines, and more specifically relates to an air passage of a compression-ignition two-stroke aviation piston engine. In addition, the present invention also relates to a compression-ignition two-stroke aviation piston engine comprising the air passage. Background technique [0002] The compression-ignition two-stroke aviation piston engine includes a cylinder block, a piston, a combustion chamber, an intake duct and an exhaust duct. When working, fresh air is input into the combustion chamber through the intake pipe, and the fresh air and fuel are fully mixed in the combustion chamber to form a combustible mixture, and the combustible mixture is ignited by piston compression to make the combustible mixture expand and push the piston to do work; Exhaust gases are expelled through the exhaust duct. [0003] The intake pipe and the exhaust pipe belong to the air passage of the compression-ignition two-str...

AI Technical Summary

Problems solved by technology

[0004] However, the air passage of the compression-ignition two-stroke aviation piston engine in the prior art is usually single-inlet and single-exhaust, so that the charging efficiency is poor, the movement intensity of the airflow in the cylinder is low, and the scavenging effect is poor.

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